TOKYO, Jan 29 (Reuters) - Japan's Nikkei share average rose
more than 3 percent in volatile trade on Friday after the Bank
Of Japan unexpectedly eased monetary policy further by
introducing a negative interest rate policy.

The Nikkei rose to 17,559.76 points by midafternoon
after diping into negative territory at one point as investors
digested side effects from the new policy on the banking sector.

The BOJ said it was adopting an interest rate of -0.1
percent, adding that it would charge interest for excess
reserves financial institutions park with the central bank. The
BOJ said it will cut interest rates further into negative
territory if judged necessary.